var MazeCharacter = function () {

	Screen.addListener( this );

};

var p = MazeCharacter.prototype = new MovieClip();

p.startMove = function ( ms ) {

	this.moveIntveral = setInterval ( this , "move" , ms );

}
p.stopMove = function () {

	clearInterval ( this.moveIntveral );

	delete this.moveIntveral;

}
p.switchIntervalMS = function ( ms ) {

	this.stopMove();

	this.startMove( ms );

}

